1 Inorganic Qualitative Analysis (Acidic radical) Experiments: 6 th , 7 th and 8 th Objectives: 1. To understand the rationale and the procedure behind the separation for various cations and anions. 2. To perform qualitative analysis of two unknown solutions that contain various ions (cations and anions) and positively identify these ions using established schemes Detection of acidic radical [anions] for simple salt The acidic radicals for simple salts were divided into 3 groups according how it reacts with strong and diluted acids 1. Dilute HCl group: Salts in this group produce specific gases when react with dil. HCl, Acidic radical of this group: Reaction of salt with group reagent الشقSymbol Acidic radicals Na 2 CO 3 + 2HCl 2NaCl + H 2 O + CO 2 كربوناتCO 3 - - Carbonates NaHCO 3 + HCl NaCl + H 2 O + CO 2 بيكربوناتHCO 3 - Bicarbonates FeS + 2HCl FeCl 2 + H 2 S الكبريتيدS -- Sulphites Na 2 SO 3 + 2HCl 2NaCl + H 2 O + SO 2 يت الكبريتSO 3 -- Sulphides Na 2 S 3 O 3 + 2HCl 2NaCl + H 2 O + SO 2 +Sات الثيوكبريتS 2 O 3 -- Thiosulphates NaNO 2 + HCl NaCl + HNO 2 3HNO 2 HNO 3 + 2NO + H 2 O 2NO + O 2 2NO 2 ريت النيتNO 2 - Nitrites KCN + HCl KCl + HCN لسيانيد اCN - Cyanides NaCNO + HCl HCNO + 2HO + NaCl لسيانات اCNO - Cyanates HClO 3 HClO 4 + H 2 O+ 2O 2 + Cl 2 كلورات الClO 3 - Chlorates
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Inorganic Qualitative Analysis (Acidic radical)
Experiments: 6th, 7th and 8th
Objectives:
1. To understand the rationale and the procedure behind the separation for various cations and anions.
2. To perform qualitative analysis of two unknown solutions that contain various ions (cations and anions) and positively identify these ions using established schemes
Detection of acidic radical [anions] for simple salt
The acidic radicals for simple salts were divided into 3 groups according how it reacts with strong and diluted acids
1. Dilute HCl group:
Salts in this group produce specific gases when react with dil. HCl, Acidic radical of this group:
Reaction of salt with group reagent الشق Symbol Acidic radicals